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Revision A
WARNING
Disc blades have two sharp cutting edges that can cause serious injury. Exercise caution and wear gloves when working
with, or near, blades.
DANGER
To avoid serious injuries or death due to insufficient thickness of material on the retaining bolts, check the
thickness (A) of the retaining bolts every time a blade is changed. Damaged or worn retaining bolts must always be
replaced in pairs at each cutting disc.
1026450
A
B
C
D
A
Figure 4.72: Retaining Bolt and Quick Change Plate
A - Retaining Bolt
B - 17 mm (11/16 in.)
C - 14 mm (9/16 in.)
D - 3 mm (1/8 in.)
•
Material thickness of retaining bolts (A) must
NOT
be
less than 14 mm (9/16 in.) (C) at the narrowest point.
•
Material thickness at the quick change plate must
NOT
be less than 3 mm (1/8 in.) (D) at the narrowest point.
1.
Position the rotary disc header at an appropriate height for the task.
2.
Shut down the engine, and remove the key from the ignition.
3.
If the rotary disc header is raised:
a.
Place blocks under each end, or just inside each end, of the cutterbar.
b.
Lower the rotary disc header onto the blocks.
c.
Shut down the engine, and remove the key from the ignition.
d.
Close the auxiliary lift cylinder lock-out valves. For instructions, refer to
3.2.1 Locking and Unlocking Auxiliary Lift
.
